Power supply



FIG. 1 is a perspective view of a power supply showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is another perspective view thereof showing the power supply in a state of use, wherein the cover at the right side of the power supply is opened.

The broken lines shown in the drawings represent portions of the power supply that form no part of the claimed design. 

CLAIM The ornamental design for a power supply, as shown and described. 